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Rarick KR, Li K, Teng RJ, Jing X, Martin DP, Xu H, Jones DW, Hogg N, Hillery CA, Garcia G, Day BW, Naylor S, Pritchard KA. Sterile inflammation induces vasculopathy and chronic lung injury in murine sickle cell disease. Free Radic Biol Med 2024; 215:112-126. [PMID: 38336101 PMCID: PMC11290318 DOI: 10.1016/j.freeradbiomed.2024.01.052] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/01/2023] [Revised: 01/11/2024] [Accepted: 01/30/2024] [Indexed: 02/12/2024]
Abstract
Murine sickle cell disease (SCD) results in damage to multiple organs, likely mediated first by vasculopathy. While the mechanisms inducing vascular damage remain to be determined, nitric oxide bioavailability and sterile inflammation are both considered to play major roles in vasculopathy. Here, we investigate the effects of high mobility group box-1 (HMGB1), a pro-inflammatory damage-associated molecular pattern (DAMP) molecule on endothelial-dependent vasodilation and lung morphometrics, a structural index of damage in sickle (SS) mice. SS mice were treated with either phosphate-buffered saline (PBS), hE-HMGB1-BP, an hE dual-domain peptide that binds and removes HMGB1 from the circulation via the liver, 1-[4-(aminocarbonyl)-2-methylphenyl]-5-[4-(1H-imidazol-1-yl)phenyl]-1H-pyrrole-2-propanoic acid (N6022) or N-acetyl-lysyltyrosylcysteine amide (KYC) for three weeks. Human umbilical vein endothelial cells (HUVEC) were treated with recombinant HMGB1 (r-HMGB1), which increases S-nitrosoglutathione reductase (GSNOR) expression by ∼80%, demonstrating a direct effect of HMGB1 to increase GSNOR. Treatment of SS mice with hE-HMGB1-BP reduced plasma HMGB1 in SS mice to control levels and reduced GSNOR expression in facialis arteries isolated from SS mice by ∼20%. These changes were associated with improved endothelial-dependent vasodilation. Treatment of SS mice with N6022 also improved vasodilation in SS mice suggesting that targeting GSNOR also improves vasodilation. SCD decreased protein nitrosothiols (SNOs) and radial alveolar counts (RAC) and increased GSNOR expression and mean linear intercepts (MLI) in lungs from SS mice. The marked changes in pulmonary morphometrics and GSNOR expression throughout the lung parenchyma in SS mice were improved by treating with either hE-HMGB1-BP or KYC. These data demonstrate that murine SCD induces vasculopathy and chronic lung disease by an HMGB1- and GSNOR-dependent mechanism and suggest that HMGB1 and GSNOR might be effective therapeutic targets for reducing vasculopathy and chronic lung disease in humans with SCD.
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Affiliation(s)
- Kevin R Rarick
- Department of Pediatrics, Division of Critical Care, Medical College of Wisconsin, Milwaukee, WI, 53226, USA; Childrens' Research Institute, Children's Wisconsin, Milwaukee, WI, 53226, USA
| | - Keguo Li
- Department of Surgery, Division of Pediatric Surgery, Medical College of Wisconsin, Milwaukee, WI, 53226, USA
| | - Ru-Jeng Teng
- Department of Pediatrics, Division of Neonatology, Medical College of Wisconsin, Milwaukee, WI, 53226, USA; Childrens' Research Institute, Children's Wisconsin, Milwaukee, WI, 53226, USA
| | - Xigang Jing
- Department of Pediatrics, Division of Neonatology, Medical College of Wisconsin, Milwaukee, WI, 53226, USA
| | - Dustin P Martin
- Department of Surgery, Division of Pediatric Surgery, Medical College of Wisconsin, Milwaukee, WI, 53226, USA
| | - Hao Xu
- Department of Medicine, Division of Endocrinology, Medical College of Wisconsin, Milwaukee, WI, 53226, USA
| | - Deron W Jones
- Department of Surgery, Division of Pediatric Surgery, Medical College of Wisconsin, Milwaukee, WI, 53226, USA
| | - Neil Hogg
- Department of Biophysics, Medical College of Wisconsin, Milwaukee, WI, 53226, USA
| | - Cheryl A Hillery
- Department of Pediatrics, Division of Hematology and Oncology, Medical College of Wisconsin, Milwaukee, WI, 53226, USA; Department of Pediatrics, Division of Hematology/Oncology, University of Pittsburgh School of Medicine, Pittsburgh, PA, 15224, USA
| | - Guilherme Garcia
- Biomedical Engineering, Medical College of Wisconsin, Milwaukee, WI, 53226, USA
| | | | | | - Kirkwood A Pritchard
- Department of Surgery, Division of Pediatric Surgery, Medical College of Wisconsin, Milwaukee, WI, 53226, USA; ReNeuroGen LLC, Milwaukee, WI, 53122, USA; Childrens' Research Institute, Children's Wisconsin, Milwaukee, WI, 53226, USA.
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Rayego-Mateos S, Morgado-Pascual JL, García-Caballero C, Lazaro I, Sala-Vila A, Opazo-Rios L, Mas-Fontao S, Egido J, Ruiz-Ortega M, Moreno JA. Intravascular hemolysis triggers NAFLD characterized by a deregulation of lipid metabolism and lipophagy blockade. J Pathol 2023; 261:169-183. [PMID: 37555366 DOI: 10.1002/path.6161] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2022] [Revised: 05/30/2023] [Accepted: 06/14/2023] [Indexed: 08/10/2023]
Abstract
Intravascular hemolysis is a common feature of different clinical entities, including sickle cell disease and malaria. Chronic hemolytic disorders are associated with hepatic damage; however, it is unknown whether heme disturbs lipid metabolism and promotes liver steatosis, thereby favoring the progression to nonalcoholic fatty liver disease (NAFLD). Using an experimental model of acute intravascular hemolysis, we report here the presence of liver injury in association with microvesicular lipid droplet deposition. Hemolysis promoted serum hyperlipidemia and altered intrahepatic triglyceride fatty acid composition, with increments in oleic, palmitoleic, and palmitic acids. These findings were related to augmented expression of transporters involved in fatty acid uptake (CD36 and MSR1) and deregulation of LDL transport, as demonstrated by decreased levels of LDL receptor and increased PCSK9 expression. Hemolysis also upregulated hepatic enzymes associated with cholesterol biosynthesis (SREBP2, HMGC1, LCAT, SOAT1) and transcription factors regulating lipid metabolism (SREBP1). Increased LC3II/LC3I ratio and p62/SQSTM1 protein levels were reported in mice with intravascular hemolysis and hepatocytes stimulated with heme, indicating a blockade of lipophagy. In cultured hepatocytes, cell pretreatment with the autophagy inductor rapamycin diminished heme-mediated toxicity and accumulation of lipid droplets. In conclusion, intravascular hemolysis enhances liver damage by exacerbating lipid accumulation and blocking the lipophagy pathway, thereby promoting NAFLD. These new findings have a high translational potential as a novel NAFLD-promoting mechanism in individuals suffering from severe hemolysis episodes. © 2023 The Authors. The Journal of Pathology published by John Wiley & Sons Ltd on behalf of The Pathological Society of Great Britain and Ireland.
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Affiliation(s)
- Sandra Rayego-Mateos
- Molecular and Cellular Biology in Renal and Vascular Pathology. IIS-Fundación Jiménez Díaz, Universidad Autónoma Madrid, Madrid, Spain
- Maimonides Biomedical Research Institute of Cordoba (IMIBIC), Hospital Universitario Reina Sofía, Cordoba, Spain
| | - José Luis Morgado-Pascual
- Maimonides Biomedical Research Institute of Cordoba (IMIBIC), Hospital Universitario Reina Sofía, Cordoba, Spain
- Department of Cell Biology, Physiology and Immunology, University of Cordoba, Cordoba, Spain
| | - Cristina García-Caballero
- Maimonides Biomedical Research Institute of Cordoba (IMIBIC), Hospital Universitario Reina Sofía, Cordoba, Spain
| | - Iolanda Lazaro
- Cardiovascular Risk and Nutrition, Hospital del Mar Medical Research Institute (IMIM), Barcelona, Spain
| | - Aleix Sala-Vila
- Cardiovascular Risk and Nutrition, Hospital del Mar Medical Research Institute (IMIM), Barcelona, Spain
| | - Lucas Opazo-Rios
- Health Science Faculty, Universidad de Las Américas, Concepción-Talcahuano, Chile
| | - Sebastian Mas-Fontao
- Spanish Biomedical Research Centre in Diabetes and Associated Metabolic Disorders (CIBERDEM), Madrid, Spain
- Biomedical Research Networking Center on Cardiovascular Diseases (CIBERCV), Madrid, Spain
- Instituto de Investigación Sanitaria (IIS)-Fundación Jiménez Díaz, Universidad Autónoma, Madrid, Spain
| | - Jesús Egido
- Spanish Biomedical Research Centre in Diabetes and Associated Metabolic Disorders (CIBERDEM), Madrid, Spain
- Instituto de Investigación Sanitaria (IIS)-Fundación Jiménez Díaz, Universidad Autónoma, Madrid, Spain
| | - Marta Ruiz-Ortega
- Molecular and Cellular Biology in Renal and Vascular Pathology. IIS-Fundación Jiménez Díaz, Universidad Autónoma Madrid, Madrid, Spain
| | - Juan Antonio Moreno
- Maimonides Biomedical Research Institute of Cordoba (IMIBIC), Hospital Universitario Reina Sofía, Cordoba, Spain
- Department of Cell Biology, Physiology and Immunology, University of Cordoba, Cordoba, Spain
- Biomedical Research Networking Center on Cardiovascular Diseases (CIBERCV), Madrid, Spain
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Olubiyi OO, Olagunju MO, Strodel B. Rational Drug Design of Peptide-Based Therapies for Sickle Cell Disease. Molecules 2019; 24:E4551. [PMID: 31842406 PMCID: PMC6943517 DOI: 10.3390/molecules24244551] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2019] [Revised: 12/08/2019] [Accepted: 12/09/2019] [Indexed: 11/16/2022] Open
Abstract
Sickle cell disease (SCD) is a group of inherited disorders affecting red blood cells, which is caused by a single mutation that results in substitution of the amino acid valine for glutamic acid in the sixth position of the β-globin chain of hemoglobin. These mutant hemoglobin molecules, called hemoglobin S, can polymerize upon deoxygenation, causing erythrocytes to adopt a sickled form and to suffer hemolysis and vaso-occlusion. Until recently, only two drug therapies for SCD, which do not even fully address the manifestations of SCD, were approved by the United States (US) Food and Drug Administration. A third treatment was newly approved, while a monoclonal antibody preventing vaso-occlusive crises is also now available. The complex nature of SCD manifestations provides multiple critical points where drug discovery efforts can be and have been directed. These notwithstanding, the need for new therapeutic approaches remains high and one of the recent efforts includes developments aimed at inhibiting the polymerization of hemoglobin S. This review focuses on anti-sickling approaches using peptide-based inhibitors, ranging from individual amino acid dipeptides investigated 30-40 years ago up to more promising 12- and 15-mers under consideration in recent years.
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Affiliation(s)
- Olujide O. Olubiyi
- Institute of Complex Systems: Structural Biochemistry, Forschungszentrum Jülich, 52425 Jülich, Germany; (M.O.O.); (B.S.)
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Obafemi Awolowo University, Ile-Ife 220282, Nigeria
| | - Maryam O. Olagunju
- Institute of Complex Systems: Structural Biochemistry, Forschungszentrum Jülich, 52425 Jülich, Germany; (M.O.O.); (B.S.)
| | - Birgit Strodel
- Institute of Complex Systems: Structural Biochemistry, Forschungszentrum Jülich, 52425 Jülich, Germany; (M.O.O.); (B.S.)
- Institute of Theoretical and Computational Chemistry, Heinrich Heine University Düsseldorf, Universitätsstraße 1, 40225 Düsseldorf, Germany
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Oda T, Yamaguchi A, Ishida R, Nikai T, Shimizu K, Matsumoto KI. Plasma proteomic changes during therapeutic hypothermia in resuscitated patients after cardiac arrest. Exp Ther Med 2019; 18:1069-1080. [PMID: 31316602 PMCID: PMC6601400 DOI: 10.3892/etm.2019.7649] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2018] [Accepted: 05/02/2019] [Indexed: 12/29/2022] Open
Abstract
Hypothermia is used for several h during cardiac and aortic surgery to protect ischemic organs. Therapeutic hypothermia (TH) is used for ≤24 h as a treatment for comatose patients after the return of spontaneous circulation (ROSC) following cardiac arrest. The proteomic approach may provide unbiased data on alterations in the abundance of proteins during TH. The objective of this study was to assess the effects of cooling/rewarming on the plasma proteome during TH after ROSC and to identify the mechanism underlying its therapeutic effects. A total of nine comatose adult patients, resuscitated shortly after cardiac arrest, were cooled to 34°C for 24 h and slowly rewarmed to 36°C. A quantitative gel-free proteomic analysis was performed using the isobaric tag for relative and absolute quantification labeling tandem mass spectrometry. Plasma samples were obtained prior to cooling and rewarming, and immediately after rewarming, from all patients during TH after ROSC. A total of 92 high-confidence proteins were identified. Statistically significant alterations were observed (>1.2-fold increase or <0.833-fold decrease) in the levels of 15 of those proteins (P=0.003–0.047), mainly proteins belonging to the acute-phase response or platelet degranulation. Unexpectedly, the levels of free hemoglobin (hemoglobin subunits α and β) were significantly downregulated during TH (P<0.05). The level of the terminal complement complex (SC5b-9) showed significant reduction after cooling (P=0.023). Although the acute-phase response proteins were upregulated, the abundance of complement proteins did not change, and the levels of SC5b-9 and free hemoglobin decreased during TH in patients after ROSC.
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Affiliation(s)
- Teiji Oda
- Division of Thoracic and Cardiovascular Surgery, Department of Surgery, Shimane University Faculty of Medicine, Izumo, Shimane 693-8501, Japan
| | - Akane Yamaguchi
- Division of Thoracic and Cardiovascular Surgery, Department of Surgery, Shimane University Faculty of Medicine, Izumo, Shimane 693-8501, Japan
| | - Ryosuke Ishida
- Department of Emergency and Critical Care Medicine, Shimane Prefectural Central Hospital, Izumo, Shimane 693-8555, Japan
| | - Tetsuro Nikai
- Department of Anesthesiology, Shimane University Faculty of Medicine, Izumo, Shimane 693-8501, Japan
| | - Koji Shimizu
- Division of Thoracic and Cardiovascular Surgery, Department of Surgery, Shimane University Faculty of Medicine, Izumo, Shimane 693-8501, Japan
| | - Ken-Ichi Matsumoto
- Department of Biosignaling and Radioisotope Experiment, Interdisciplinary Center for Science Research, Organization for Research, Shimane University, Izumo, Shimane 693-8501, Japan
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P-selectin drives complement attack on endothelium during intravascular hemolysis in TLR-4/heme-dependent manner. Proc Natl Acad Sci U S A 2019; 116:6280-6285. [PMID: 30850533 DOI: 10.1073/pnas.1814797116] [Citation(s) in RCA: 83] [Impact Index Per Article: 16.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022] Open
Abstract
Hemolytic diseases are frequently linked to multiorgan failure subsequent to vascular damage. Deciphering the mechanisms leading to organ injury upon hemolytic event could bring out therapeutic approaches. Complement system activation occurs in hemolytic disorders, such as sickle cell disease, but the pathological relevance and the acquisition of a complement-activating phenotype during hemolysis remain unclear. Here we found that intravascular hemolysis, induced by injection of phenylhydrazine, resulted in increased alanine aminotransferase plasma levels and NGAL expression. This liver damage was at least in part complement-dependent, since it was attenuated in complement C3-/- mice and by injection of C5-blocking antibody. We evidenced C3 activation fragments' deposits on liver endothelium in mice with intravascular hemolysis or injected with heme as well as on cultured human endothelial cells (EC) exposed to heme. This process was mediated by TLR4 signaling, as revealed by pharmacological blockade and TLR4 deficiency in mice. Mechanistically, TLR4-dependent surface expression of P-selectin triggered an unconventional mechanism of complement activation by noncovalent anchoring of C3 activation fragments, including the typical fluid-phase C3(H2O), measured by surface plasmon resonance and flow cytometry. P-selectin blockade by an antibody prevented complement deposits and attenuated the liver stress response, measured by NGAL expression, in the hemolytic mice. In conclusion, these results revealed the critical impact of the triad TLR4/P-selectin/complement in the liver damage and its relevance for hemolytic diseases. We anticipate that blockade of TLR4, P-selectin, or the complement system could prevent liver injury in hemolytic diseases like sickle cell disease.
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Orekhova NA. Hematological indicators in pygmy wood mouse Apodemus uralensis (Muridae, Rodentia) populations as markers of the environmental radiation exposure: East Urals radioactive trace (Russia). ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2018; 25:16144-16166. [PMID: 29594908 DOI: 10.1007/s11356-018-1787-7] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/14/2017] [Accepted: 03/19/2018] [Indexed: 06/08/2023]
Abstract
The hematological effects of chronic radiation exposure in males of the pygmy wood mouse (Apodemus uralensis Pall., 1811) from the East Urals radioactive trace (EURT) area were assessed, taking into account population abundance and reproductive status (immature, ripening, and mature yearlings). For this purpose, we analyzed the morpho-functional characteristics of erythrocytes (red cell indices [MCV, MCH, MCHC], red cell count, activity of antioxidant enzymes [GSH-Px, CAT], lipid peroxidation, glycolysis, osmotic resistance, methaemoglobin content) and blood plasma components (free hemoglobin, total lipids, total cholesterol, and glucose) in the background territory and the EURT area; these areas have a density of soil contamination with 90Sr of 12,851 and 198 kBq × m-2, respectively (four and two order of magnitude higher than the background value). The data indicate the "hyperfunctional" state of the erythrocyte, aimed at activation of the gas transport function of blood in the radioactive environment. This, as a consequence, determines the insufficiency of energy supply of the cell defense system necessary to maintain the structural integrity of the membrane. Intensification of membrane lipid peroxidation, reduction of osmotic resistance and GSH-Px activity in red cells, an increase in the degree of intravascular hemolysis, and tendency towards erythropenia indicate the processes of accelerated aging of erythrocytes and their more pronounced destruction in the circulatory bed. The level of the hematological response increased with increasing radiation burden and was more pronounced with a large population size. The interaction effect of "overpopulation" and "radioactive pollution" was observed to a lesser degree for ripening males, and was very small for sexually mature animals. Immature males from the EURT head part with internal whole-body radiation doses of 0.0045-0.35 mGy/day can be considered as the most sensitive group to the factors synergy, including radiation damage and overabundance population.
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Affiliation(s)
- Natal'ya A Orekhova
- Institute of Plant and Animal Ecology, Ural Division of Russian Academy of Sciences, ul. Vos'mogo Marta 202, Yekaterinburg, 620144, Russia.
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Abstract
The primary β-globin gene mutation that causes sickle cell disease (SCD) has significant pathophysiological consequences that result in hemolytic events and the induction of the inflammatory processes that ultimately lead to vaso-occlusion. In addition to their role in the initiation of the acute painful vaso-occlusive episodes that are characteristic of SCD, inflammatory processes are also key components of many of the complications of the disease including autosplenectomy, acute chest syndrome, pulmonary hypertension, leg ulcers, nephropathy and stroke. We, herein, discuss the events that trigger inflammation in the disease, as well as the mechanisms, inflammatory molecules and cells that propagate these inflammatory processes. Given the central role that inflammation plays in SCD pathophysiology, many of the therapeutic approaches currently under pre-clinical and clinical development for the treatment of SCD endeavor to counter aspects or specific molecules of these inflammatory processes and it is possible that, in the future, we will see anti-inflammatory drugs being used either together with, or in place of, hydroxyurea in those SCD patients for whom hematopoietic stem cell transplants and evolving gene therapies are not a viable option.
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Affiliation(s)
- Nicola Conran
- Hematology Center, University of Campinas - UNICAMP, Cidade Universitária, Campinas-SP, Brazil
| | - John D Belcher
- Department of Medicine, Division of Hematology, Oncology and Transplantation, Vascular Biology Center, University of Minnesota, Minneapolis, MN, USA
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Kato GJ, Steinberg MH, Gladwin MT. Intravascular hemolysis and the pathophysiology of sickle cell disease. J Clin Invest 2017; 127:750-760. [PMID: 28248201 DOI: 10.1172/jci89741] [Citation(s) in RCA: 410] [Impact Index Per Article: 58.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Abstract
Hemolysis is a fundamental feature of sickle cell anemia that contributes to its pathophysiology and phenotypic variability. Decompartmentalized hemoglobin, arginase 1, asymmetric dimethylarginine, and adenine nucleotides are all products of hemolysis that promote vasomotor dysfunction, proliferative vasculopathy, and a multitude of clinical complications of pulmonary and systemic vasculopathy, including pulmonary hypertension, leg ulcers, priapism, chronic kidney disease, and large-artery ischemic stroke. Nitric oxide (NO) is inactivated by cell-free hemoglobin in a dioxygenation reaction that also oxidizes hemoglobin to methemoglobin, a non-oxygen-binding form of hemoglobin that readily loses heme. Circulating hemoglobin and heme represent erythrocytic danger-associated molecular pattern (eDAMP) molecules, which activate the innate immune system and endothelium to an inflammatory, proadhesive state that promotes sickle vaso-occlusion and acute lung injury in murine models of sickle cell disease. Intravascular hemolysis can impair NO bioavailability and cause oxidative stress, altering redox balance and amplifying physiological processes that govern blood flow, hemostasis, inflammation, and angiogenesis. These pathological responses promote regional vasoconstriction and subsequent blood vessel remodeling. Thus, intravascular hemolysis represents an intrinsic mechanism for human vascular disease that manifests clinical complications in sickle cell disease and other chronic hereditary or acquired hemolytic anemias.
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Ozcan ME, Ince B, Karadeli HH, Gedikbasi A, Asil T, Altinoz MA. Higher minor hemoglobin A2 levels in multiple sclerosis patients correlate with lesser disease severity. Neuropsychiatr Dis Treat 2016; 12:2033-8. [PMID: 27578976 PMCID: PMC4998019 DOI: 10.2147/ndt.s109954] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
Abstract
OBJECTIVE To define whether minor adult hemoglobin A2 (HbA2, α2δ2) exerts any protective activity in multiple sclerosis (MS). METHODS HbA2 levels were measured in 146 MS patients with high performance liquid chromatography and association with MS Severity Scores (MSSS) were determined. HbA2 associations with blood count parameters were also studied using blood counts evaluated on the same day of high performance liquid chromatography sampling. Routine biochemical parameters were also determined to rule out elusively influential factors, such as anemia and thyroid disorders. RESULTS HbA2 levels negatively correlated with MSSS (Spearman correlation, R: -0.186, P=0.025). Exclusion of confounding factors with a generalized linear model revealed an even stronger negative correlation between HbA2 and MSSS (P<0.001). HbA2 positively correlated with red blood cells (RBCs) (R=0.350, P<0.001) and in turn, RBCs negatively correlated with MSSS (R=-0.180, P=0.031). Average HbA2 levels were highest among patients treated with interferon β1a. CONCLUSION RBC fragility is increased in MS, and recent data suggest that circulating free Hb contributes to neural injury in MS. HbA2 and its oxidative denaturation product hemichrome A2 enhance RBC membrane stability to a greater extent than do major HbA or hemichrome A. Reductions in ischemic cerebrovascular vascular events are reported in β-thalassemia carriers and HbA2 levels are considerably higher in this population. Episodic declines of cerebral blood flow were shown in bipolar disorder, and we have recently shown a protective role of HbA2 against postpartum episodes in females with bipolar disorder. HbA2's erythroprotective functions may reduce free Hb and long-term neural injury in MS.
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Affiliation(s)
| | - Bahri Ince
- Centre for Mood Disorders, Bakirkoy Research and Training Hospital for Psychiatry
| | | | | | - Talip Asil
- Department of Neurology, Bezmialem University
| | - Meric A Altinoz
- Department of Immunology, Experimental Medicine Research Institute (DETAE), Istanbul University, Istanbul, Turkey
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Shi PA, Choi E, Chintagari NR, Nguyen J, Guo X, Yazdanbakhsh K, Mohandas N, Alayash AI, Manci EA, Belcher JD, Vercellotti GM. Sustained treatment of sickle cell mice with haptoglobin increases HO-1 and H-ferritin expression and decreases iron deposition in the kidney without improvement in kidney function. Br J Haematol 2016; 175:714-723. [PMID: 27507623 DOI: 10.1111/bjh.14280] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2016] [Accepted: 06/06/2016] [Indexed: 12/21/2022]
Abstract
There is growing evidence that extracellular haemoglobin and haem mediate inflammatory and oxidative damage in sickle cell disease. Haptoglobin (Hp), the scavenger for free haemoglobin, is depleted in most patients with sickle cell disease due to chronic haemolysis. Although single infusions of Hp can ameliorate vaso-occlusion in mouse models of sickle cell disease, prior studies have not examined the therapeutic benefits of more chronic Hp dosing on sickle cell disease manifestations. In the present study, we explored the effect of Hp treatment over a 3-month period in sickle mice at two dosing regimens: the first at a moderate dose of 200 mg/kg thrice weekly and the second at a higher dose of 400 mg/kg thrice weekly. We found that only the higher dosing regimen resulted in increased haem-oxygenase-1 and heavy chain ferritin (H-ferritin) expression and decreased iron deposition in the kidney. Despite the decreased kidney iron deposition following Hp treatment, there was no significant improvement in kidney function. However, there was a nearly significant trend towards decreased liver infarction.
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Affiliation(s)
- Patricia A Shi
- Lindsley F. Kimball Research Institute, New York Blood Center, New York, NY, USA
| | - Erika Choi
- Lindsley F. Kimball Research Institute, New York Blood Center, New York, NY, USA
| | | | - Julia Nguyen
- Department of Hematology, Oncology, and Transplantation, University of Minnesota Medical School, Minneapolis, MN, USA
| | - Xinhua Guo
- Lindsley F. Kimball Research Institute, New York Blood Center, New York, NY, USA
| | - Karina Yazdanbakhsh
- Lindsley F. Kimball Research Institute, New York Blood Center, New York, NY, USA
| | - Narla Mohandas
- Lindsley F. Kimball Research Institute, New York Blood Center, New York, NY, USA
| | - Abdu I Alayash
- Center for Biologics Evaluation and Research, Food and Drug Administration, Silver Spring, MD, USA
| | - Elizabeth A Manci
- Department of Pathology, University of South Alabama School of Medicine, Birmingham, AL, USA
| | - John D Belcher
- Department of Hematology, Oncology, and Transplantation, University of Minnesota Medical School, Minneapolis, MN, USA
| | - Gregory M Vercellotti
- Department of Hematology, Oncology, and Transplantation, University of Minnesota Medical School, Minneapolis, MN, USA
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11
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Conran N. Prospects for early investigational therapies for sickle cell disease. Expert Opin Investig Drugs 2015; 24:595-602. [DOI: 10.1517/13543784.2015.1012292] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
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12
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Wandersee NJ, Maciaszek JL, Giger KM, Hanson MS, Zheng S, Guo Y, Mickelson B, Hillery CA, Lykotrafitis G, Low PS, Hogg N. Dietary supplementation with docosahexanoic acid (DHA) increases red blood cell membrane flexibility in mice with sickle cell disease. Blood Cells Mol Dis 2014; 54:183-8. [PMID: 25488613 DOI: 10.1016/j.bcmd.2014.11.004] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2014] [Accepted: 11/13/2014] [Indexed: 01/19/2023]
Abstract
Humans and mice with sickle cell disease (SCD) have rigid red blood cells (RBCs). Omega-3 fatty acids, such as docosahexanoic acid (DHA), may influence RBC deformability via incorporation into the RBC membrane. In this study, sickle cell (SS) mice were fed natural ingredient rodent diets supplemented with 3% DHA (DHA diet) or a control diet matched in total fat (CTRL diet). After 8weeks of feeding, we examined the RBCs for: 1) stiffness, as measured by atomic force microscopy; 2) deformability, as measured by ektacytometry; and 3) percent irreversibly sickled RBCs on peripheral blood smears. Using atomic force microscopy, it is found that stiffness is increased and deformability decreased in RBCs from SS mice fed CTRL diet compared to wild-type mice. In contrast, RBCs from SS mice fed DHA diet had markedly decreased stiffness and increased deformability compared to RBCs from SS mice fed CTRL diet. Furthermore, examination of peripheral blood smears revealed less irreversibly sickled RBCs in SS mice fed DHA diet as compared to CTRL diet. In summary, our findings indicate that DHA supplementation improves RBC flexibility and reduces irreversibly sickled cells by 40% in SS mice. These results point to potential therapeutic benefits of dietary omega-3 fatty acids in SCD.
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Affiliation(s)
- Nancy J Wandersee
- Department of Pediatrics, Medical College of Wisconsin, Milwaukee, WI, USA; Children's Research Institute, Medical College of Wisconsin, Milwaukee, WI, USA; Blood Research Institute, Blood Center of Wisconsin, Milwaukee, WI, USA.
| | - Jamie L Maciaszek
- Department of Mechanical Engineering, University of Connecticut, Storrs, CT, USA
| | - Katie M Giger
- Department of Chemistry, Purdue University, West Lafayette, IN, USA
| | - Madelyn S Hanson
- Blood Research Institute, Blood Center of Wisconsin, Milwaukee, WI, USA; Department of Biophysics, Medical College of Wisconsin, Milwaukee, WI, USA
| | - Suilan Zheng
- Department of Chemistry, Purdue University, West Lafayette, IN, USA
| | - YiHe Guo
- Department of Pediatrics, Medical College of Wisconsin, Milwaukee, WI, USA; Children's Research Institute, Medical College of Wisconsin, Milwaukee, WI, USA; Blood Research Institute, Blood Center of Wisconsin, Milwaukee, WI, USA
| | - Barbara Mickelson
- Technical Services, Harlan-Teklad Laboratories, Inc., Madison, WI, USA
| | - Cheryl A Hillery
- Department of Pediatrics, Medical College of Wisconsin, Milwaukee, WI, USA; Children's Research Institute, Medical College of Wisconsin, Milwaukee, WI, USA; Blood Research Institute, Blood Center of Wisconsin, Milwaukee, WI, USA
| | - George Lykotrafitis
- Department of Mechanical Engineering, University of Connecticut, Storrs, CT, USA
| | - Philip S Low
- Department of Chemistry, Purdue University, West Lafayette, IN, USA
| | - Neil Hogg
- Department of Biophysics, Medical College of Wisconsin, Milwaukee, WI, USA
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Ji X, Xu H, Zhang H, Hillery CA, Gao HQ, Pritchard KA. Anion exchange HPLC isolation of high-density lipoprotein (HDL) and on-line estimation of proinflammatory HDL. PLoS One 2014; 9:e91089. [PMID: 24609013 PMCID: PMC3946658 DOI: 10.1371/journal.pone.0091089] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2014] [Accepted: 02/07/2014] [Indexed: 01/08/2023] Open
Abstract
Proinflammatory high-density lipoprotein (p-HDL) is a biomarker of cardiovascular disease. Sickle cell disease (SCD) is characterized by chronic states of oxidative stress that many consider to play a role in forming p-HDL. To measure p-HDL, apolipoprotein (apo) B containing lipoproteins are precipitated. Supernatant HDL is incubated with an oxidant/LDL or an oxidant alone and rates of HDL oxidation monitored with dichlorofluorescein (DCFH). Although apoB precipitation is convenient for isolating HDL, the resulting supernatant matrix likely influences HDL oxidation. To determine effects of supernatants on p-HDL measurements we purified HDL from plasma from SCD subjects by anion exchange (AE) chromatography, determined its rate of oxidation relative to supernatant HDL. SCD decreased total cholesterol but not triglycerides or HDL and increased cell-free (cf) hemoglobin (Hb) and xanthine oxidase (XO). HDL isolated by AE-HPLC had lower p-HDL levels than HDL in supernatants after apoB precipitation. XO+xanthine (X) and cf Hb accelerated purified HDL oxidation. Although the plate and AE-HPLC assays both showed p-HDL directly correlated with cf-Hb in SCD plasma, the plate assay yielded p-HDL data that was influenced more by cf-Hb than AE-HPLC generated p-HDL data. The AE-HPLC p-HDL assay reduces the influence of the supernatants and shows that SCD increases p-HDL.
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Affiliation(s)
- Xiang Ji
- Department of Geriatrics, Qilu Hospital, Shandong University, Key Laboratory of Cardiovascular Proteomics of Shandong Province, Jinan, Shandong, China
- Department of Surgery, Division of Pediatric Surgery, Medical College of Wisconsin, Milwaukee, Wisconsin, United States of America
| | - Hao Xu
- Department of Surgery, Division of Pediatric Surgery, Medical College of Wisconsin, Milwaukee, Wisconsin, United States of America
- Children’s Research Institute, Milwaukee, Wisconsin, United States of America
- Medical College of Wisconsin, Milwaukee, Wisconsin, United States of America
| | - Hao Zhang
- Department of Surgery, Division of Pediatric Surgery, Medical College of Wisconsin, Milwaukee, Wisconsin, United States of America
- Children’s Research Institute, Milwaukee, Wisconsin, United States of America
- Medical College of Wisconsin, Milwaukee, Wisconsin, United States of America
| | - Cheryl A. Hillery
- Department of Pediatrics, Division of Hematology, Medical College of Wisconsin, Milwaukee, Wisconsin, United States of America
- Blood Research Institute, Milwaukee, Wisconsin, United States of America
- Children’s Research Institute, Milwaukee, Wisconsin, United States of America
- Medical College of Wisconsin, Milwaukee, Wisconsin, United States of America
| | - Hai-qing Gao
- Department of Geriatrics, Qilu Hospital, Shandong University, Key Laboratory of Cardiovascular Proteomics of Shandong Province, Jinan, Shandong, China
- Department of Surgery, Division of Pediatric Surgery, Medical College of Wisconsin, Milwaukee, Wisconsin, United States of America
| | - Kirkwood A. Pritchard
- Department of Surgery, Division of Pediatric Surgery, Medical College of Wisconsin, Milwaukee, Wisconsin, United States of America
- Children’s Research Institute, Milwaukee, Wisconsin, United States of America
- Medical College of Wisconsin, Milwaukee, Wisconsin, United States of America
- * E-mail:
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